SAA5288 Ver la hoja de datos (PDF) - Philips Electronics
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componentes Descripción
Fabricante
SAA5288 Datasheet PDF : 48 Pages
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Philips Semiconductors
TV microcontroller with full screen
On Screen Display (OSD)
Preliminary specification
SAA5288
SYMBOL
FRAME
VSSD
COR
RGBREF
B
G
R
VDS
HSYNC
VSYNC
VDDA
VDDD
OSCGND
XTALIN
XTALOUT
RESET
VDDM
P1.0/INT1
P1.1/T0
P1.2/INT0
P1.3/INT1
P1.6/SCL
P1.7/SDA
P1.4
P1.5
PIN
DESCRIPTION
27
De-interlace output synchronised with the VSYNC pulse to produce a non-interlaced
display by adjustment of the vertical deflection circuits.
28
Internally connected; this pin should be connected to digital ground.
29
Open-drain, active LOW output which allows selective contrast reduction of the TV
picture to enhance a mixed mode display.
31
DC input voltage to define the output HIGH level on the RGB pins.
32
Pixel rate output of the BLUE colour information.
33
Pixel rate output of the GREEN colour information.
34
Pixel rate output of the RED colour information.
35
Video/data switch push-pull output for dot rate fast blanking.
36
Schmitt trigger input for a TTL level version of the horizontal sync pulse; the polarity
of this pulse is programmable by register bit TXT1.H POLARITY.
37
Schmitt trigger input for a TTL level version of the vertical sync pulse; the polarity of
this pulse is programmable by register bit TXT1.V POLARITY.
38
+5 V display power supply.
39
+5 V display power supply.
40
Crystal oscillator ground.
41
12 MHz crystal oscillator input.
42
12 MHz crystal oscillator output.
43
If the reset input is HIGH for at least 3 machine cycles (36 oscillator periods) while
the oscillator is running, the device is reset; this pin should be connected to VDDM via
a 2.2 µF capacitor.
44
+5 V microcontroller power supply.
45
Port 1. 8-bit open-drain bidirectional port with alternative functions.
46
P1.0/INT1 is external interrupt 1, can be triggered on the rising/falling edge of pulse.
47
P1.1/T0 is the counter/timer 0.
48
49
P1.2/INT0 is the external interrupt 0.
50
P1.3/T1 is the counter/timer 1.
51
P1.7/SDA is the serial data port for the I2C-bus.
52
P1.6/SCL is the serial clock input for the I2C-bus.
1997 Jun 24
7
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